Clubs
| Name | Short name | Club type |
|---|---|---|
| 1900 | 1900 | Social |
| 1912 | 1912 | Social |
| 1917 Club | 1917 | Social |
| 1920 Club | 1920 | Social |
| Albany Club | Albany | Social |
| Albemarle | Albemarle | Social |
| Albion Club | Albion | Social |
| Aldwych Club | Aldwych | Social |
| Alfred | Alfred | Social |
| All England Lawn Tennis Club | All England Lawn Tennis | Sporting |
| Allies | Allies | Social |
| Alpine Club | Alpine | Social |
| Argentine Club | Argentine | Social |
| Army and Navy Club | Army and Navy | Social |
| Arthurs' Club | Arthurs' | Social |
| Arts Club | Arts | Social |
| Athenaeum | Athenaeum | Political |
| Australasian Club | Australasian | Social |
| Authors' Club | Authors' | Social |
| Automobile Club | Automobile | Social |